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.TH "RBD-NBD" "8" "March 07, 2017" "dev" "Ceph"
.SH NAME
rbd-nbd \- map rbd images to nbd device
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.SH SYNOPSIS
.nf
\fBrbd\-nbd\fP [\-c conf] [\-\-nbds_max \fIlimit\fP] [\-\-read\-only] [\-\-device \fInbd device\fP] map \fIimage\-spec\fP | \fIsnap\-spec\fP
\fBrbd\-nbd\fP unmap \fInbd device\fP
\fBrbd\-nbd\fP list\-mapped
.fi
.sp
.SH DESCRIPTION
.sp
\fBrbd\-nbd\fP is a client for RADOS block device (rbd) images like rbd kernel module.
It will map a rbd image to a nbd (Network Block Device) device, allowing access it
as regular local block device.
.SH OPTIONS
.INDENT 0.0
.TP
.B \-c ceph.conf
Use \fIceph.conf\fP configuration file instead of the default
\fB/etc/ceph/ceph.conf\fP to determine monitor addresses during startup.
.UNINDENT
.INDENT 0.0
.TP
.B \-\-nbds_max *limit*
Override the parameter of NBD kernel module when modprobe, used to
limit the count of nbd device.
.UNINDENT
.SH IMAGE AND SNAP SPECS
.nf
\fIimage\-spec\fP is [\fIpool\-name\fP]/\fIimage\-name\fP
\fIsnap\-spec\fP  is [\fIpool\-name\fP]/\fIimage\-name\fP@\fIsnap\-name\fP
.fi
.sp
.sp
The default for \fIpool\-name\fP is "rbd".  If an image name contains a slash
character (\(aq/\(aq), \fIpool\-name\fP is required.
.SH AVAILABILITY
.sp
\fBrbd\-nbd\fP is part of Ceph, a massively scalable, open\-source, distributed storage system. Please refer to
the Ceph documentation at \fI\%http://ceph.com/docs\fP for more information.
.SH SEE ALSO
.sp
\fBrbd\fP(8)
.SH COPYRIGHT
2010-2014, Inktank Storage, Inc. and contributors. Licensed under Creative Commons BY-SA
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